Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 122 insertions, 0 deletions

diff --git a/meshmc/launcher/minecraft/update/LibrariesTask.cpp b/meshmc/launcher/minecraft/update/LibrariesTask.cpp
new file mode 100644
index 0000000000..0b0524f4e3
--- /dev/null
+++ b/meshmc/launcher/minecraft/update/LibrariesTask.cpp
@@ -0,0 +1,122 @@
+/* SPDX-FileCopyrightText: 2026 Project Tick
+ * SPDX-FileContributor: Project Tick
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   MeshMC - A Custom Launcher for Minecraft
+ *   Copyright (C) 2026 Project Tick
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "LibrariesTask.h"
+
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/PackProfile.h"
+
+#include "Application.h"
+
+LibrariesTask::LibrariesTask(MinecraftInstance* inst)
+{
+	m_inst = inst;
+}
+
+void LibrariesTask::executeTask()
+{
+	setStatus(tr("Getting the library files from Mojang..."));
+	qDebug() << m_inst->name() << ": downloading libraries";
+	MinecraftInstance* inst = (MinecraftInstance*)m_inst;
+
+	// Build a list of URLs that will need to be downloaded.
+	auto components = inst->getPackProfile();
+	auto profile = components->getProfile();
+
+	auto job = new NetJob(tr("Libraries for instance %1").arg(inst->name()),
+						  APPLICATION->network());
+	downloadJob.reset(job);
+
+	auto metacache = APPLICATION->metacache();
+
+	auto processArtifactPool = [&](const QList<LibraryPtr>& pool,
+								   QStringList& errors,
+								   const QString& localPath) {
+		for (auto lib : pool) {
+			if (!lib) {
+				emitFailed(
+					tr("Null jar is specified in the metadata, aborting."));
+				return false;
+			}
+			auto dls = lib->getDownloads(currentSystem, metacache.get(), errors,
+										 localPath);
+			for (auto dl : dls) {
+				downloadJob->addNetAction(dl);
+			}
+		}
+		return true;
+	};
+
+	QStringList failedLocalLibraries;
+	QList<LibraryPtr> libArtifactPool;
+	libArtifactPool.append(profile->getLibraries());
+	libArtifactPool.append(profile->getNativeLibraries());
+	libArtifactPool.append(profile->getMavenFiles());
+	libArtifactPool.append(profile->getMainJar());
+	processArtifactPool(libArtifactPool, failedLocalLibraries,
+						inst->getLocalLibraryPath());
+
+	QStringList failedLocalJarMods;
+	processArtifactPool(profile->getJarMods(), failedLocalJarMods,
+						inst->jarModsDir());
+
+	if (!failedLocalJarMods.empty() || !failedLocalLibraries.empty()) {
+		downloadJob.reset();
+		QString failed_all =
+			(failedLocalLibraries + failedLocalJarMods).join("\n");
+		emitFailed(tr("Some artifacts marked as 'local' are missing their "
+					  "files:\n%1\n\nYou need to either add the files, or "
+					  "removed the packages that require them.\nYou'll have to "
+					  "correct this problem manually.")
+					   .arg(failed_all));
+		return;
+	}
+
+	connect(downloadJob.get(), &NetJob::succeeded, this,
+			&LibrariesTask::emitSucceeded);
+	connect(downloadJob.get(), &NetJob::failed, this,
+			&LibrariesTask::jarlibFailed);
+	connect(downloadJob.get(), &NetJob::progress, this,
+			&LibrariesTask::progress);
+	downloadJob->start();
+}
+
+bool LibrariesTask::canAbort() const
+{
+	return true;
+}
+
+void LibrariesTask::jarlibFailed(QString reason)
+{
+	emitFailed(tr("Game update failed: it was impossible to fetch the required "
+				  "libraries.\nReason:\n%1")
+				   .arg(reason));
+}
+
+bool LibrariesTask::abort()
+{
+	if (downloadJob) {
+		return downloadJob->abort();
+	} else {
+		qWarning() << "Prematurely aborted LibrariesTask";
+	}
+	return true;
+}